Consolidated Statements of Operations - DTE Electric Company - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Revenues	$ 7,288	$ 6,845	$ 6,638
Operating Expenses
Fuel, purchased power, and gas — utility	1,904	1,719	1,798
Taxes other than income	431	395	406
Asset (gains) losses and impairments, net	33	37	14
Operating Expenses	13,469	9,868	10,738
Operating Income	1,495	1,555	1,430
Other (Income) and Deductions
Interest expense	630	601	568
Interest income	(22)	(29)	(9)
Non-operating retirement benefits, net	17	50	39
Other income	(254)	(259)	(250)
Other expenses	75	104	69
Other (Income) and Deductions	839	473	417
Income Before Income Taxes	656	1,082	1,013
Income Tax Expense	(130)	37	71
Net Income Attributable to DTE Energy Company/DTE Electric Company	907	1,368	1,169
DTE Electric
Operating Revenues	5,809	5,506	5,224
Operating Expenses
Fuel, purchased power, and gas — utility	1,541	1,397	1,390
Operation and maintenance	1,569	1,505	1,452
Depreciation and amortization	1,109	1,043	946
Taxes other than income	320	296	310
Asset (gains) losses and impairments, net	1	41	13
Operating Expenses	4,540	4,282	4,111
Operating Income	1,269	1,224	1,113
Other (Income) and Deductions
Interest expense	335	331	313
Interest income	0	(2)	(2)
Non-operating retirement benefits, net	(2)	(1)	(1)
Other income	(71)	(87)	(107)
Other expenses	37	96	56
Other (Income) and Deductions	299	337	259
Income Before Income Taxes	970	887	854
Income Tax Expense	104	109	138
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 866	$ 778	$ 716